Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,250
This Month
22
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Research Volume
13,405 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hybrid III-V/Silicon Quantum Photonic Device Generating Broadband Entangled Photon Pairs
J. Schuhmann, L. Lazzari, M. Morassi +8 more·Nov 21, 2023
The demand for integrated photonic chips combining the generation and manipulation of quantum states of light is steadily increasing, driven by the need for compact and scalable platforms for quantum information technologies. While photonic circuits ...
Extracting Many-Body Quantum Resources within One-Body Reduced Density Matrix Functional Theory
Carlos L. Benavides-Riveros, Tomasz Wasak, Alessio Recati·Nov 21, 2023
Quantum Fisher information (QFI) is a central concept in quantum sciences used to quantify the ultimate precision limit of parameter estimation, detect quantum phase transitions, witness genuine multipartite entanglement, or probe nonlocality. Despit...
Fast adaptive optics for high-dimensional quantum communications in turbulent channels
Lukas Scarfe, F. Hufnagel, M. Ferrer-Garcia +3 more·Nov 21, 2023
Quantum Key Distribution (QKD) promises a provably secure method to transmit information from one party to another. Free-space QKD allows for this information to be sent over great distances and in places where fibre-based communications cannot be im...
Absorption-Emission Codes for Atomic and Molecular Quantum Information Platforms.
Shubham P. Jain, Eric R. Hudson, Wesley C. Campbell +1 more·Nov 21, 2023
Diatomic molecular codes [V. V. Albert, J. P. Covey, and J. Preskill, Robust encoding of a qubit in a molecule, Phys. Rev. X 10, 031050 (2020).PRXHAE2160-330810.1103/PhysRevX.10.031050] are designed to encode quantum information in the orientation of...
Quantum approximated cloning-assisted density matrix exponentiation
Pablo Rodriguez-Grasa, Rubén Ibarrondo, Javier Gonzalez-Conde +3 more·Nov 20, 2023
Classical information loading is an essential task for many processing quantum algorithms, constituting a cornerstone in the field of quantum machine learning. In particular, the embedding techniques based on Hamiltonian simulation techniques enable ...
Qudits for decomposing multiqubit gates and realizing quantum algorithms
E. Kiktenko, Anastasiia S. Nikolaeva, Aleksey K. Fedorov·Nov 20, 2023
The paradigm behind digital quantum computing inherits the idea of using binary information processing. Nature in fact gives much more rich structures of physical objects that can be used for encoding information, which is especially interesting in t...
An Efficient Quantum Circuit Construction Method for Mutually Unbiased Bases in $n$-Qubit Systems
Wang Yu, Dongsheng Wu·Nov 20, 2023
Mutually unbiased bases (MUBs) play a crucial role in numerous applications within quantum information science, such as quantum state tomography, error correction, entanglement detection, and quantum cryptography. Utilizing \(2^n + 1\) MUB circuits p...
Demonstration of Maxwell demon-assisted Einstein-Podolsky-Rosen steering via superconducting quantum processor
Z. Wang, Ruixia Wang, Peng Zhao +9 more·Nov 18, 2023
The concept of Maxwell demon plays an essential role in connecting thermodynamics and information theory, while entanglement and nonlocality are fundamental features of quantum theory. Given the rapid advancements in the field of quantum information ...
Benchmarking Machine Learning Models for Quantum Error Correction
Tim Fu, Yue Zhao·Nov 18, 2023
Quantum Error Correction (QEC) is one of the fundamental problems in quantum computer systems, which aims to detect and correct errors in the data qubits within quantum computers. Due to the presence of unreliable data qubits in existing quantum comp...
Fast algorithms for classical specifications of stabiliser states and Clifford gates
Nadish de Silva, Wilfred Salmon, Ming Yin·Nov 17, 2023
The stabiliser formalism plays a central role in quantum computing, error correction, and fault tolerance. Conversions between and verifications of different specifications of stabiliser states and Clifford gates are important components of many clas...
Quantum-Assisted Simulation: A Framework for Developing Machine Learning Models in Quantum Computing
Minati Rath, Hema Date·Nov 17, 2023
Machine Learning (ML) models are trained using historical data to classify new, unseen data. However, traditional computing resources often struggle to handle the immense amount of data, commonly known as Big Data, within a reasonable time frame. Qua...
Realization of a programmable multi-purpose photonic quantum memory with over-thousand qubit manipulations
Sheng Zhang, Jixuan Shi, Z. Cui +4 more·Nov 17, 2023
Quantum networks can enable various applications such as distributed quantum computing, long-distance quantum communication, and network-based quantum sensing with unprecedented performances. One of the most important building blocks for a quantum ne...
Identification of a natural fieldlike entanglement resource in trapped-ion chains
N. Klco, D. H. Beck·Nov 15, 2023
The electromagnetic trapping of ion chains can be regarded as a process of non-trivial entangled quantum state preparation within Hilbert spaces of the local axial motional modes. To begin uncovering properties of this entanglement resource produced ...
Accurate and Honest Approximation of Correlated Qubit Noise
Setiawan F., A. Gramolin, E. Matekole +2 more·Nov 15, 2023
Accurate modeling of noise in realistic quantum processors is critical for constructing fault-tolerant quantum computers. While a full simulation of actual noisy quantum circuits provides information about correlated noise among all qubits and is the...
Revealing effects of local dimension on variable-range interacting model by connecting Lieb-Robinson bounds and multipartite entanglement
Keshav Das Agarwal, Debkanta Ghosh, Pritam Halder +1 more·Nov 14, 2023
A spin-$s$ variable-range interacting Ising model may display qualitatively different behaviors depending on the fall-off rate of the interactions, as already seen in equilibrium studies of spin-1/2 systems. We propose a dynamical method using weight...
High-efficiency single-photon source above the loss-tolerant threshold for efficient linear optical quantum computing
X. Ding, Yong-Peng Guo, Mo-Chi Xu +13 more·Nov 14, 2023
Photon loss is the biggest problem for scalable photonic quantum information processing. This issue can be tackled through quantum error correction, provided that the overall photon loss is below a threshold of one-third. However, all reported on-dem...
Lecture notes on quantum computing
A. F. Kockum, Ariadna Soro, Laura Garc'ia-'Alvarez +4 more·Nov 14, 2023
These are the lecture notes of the master's course"Quantum Computing", taught at Chalmers University of Technology every fall since 2020, with participation of students from RWTH Aachen and Delft University of Technology. The aim of this course is to...
Benchmarking the Ability of a Controller to Execute Quantum Error Corrected Non-Clifford Circuits
Y. Kurman, Lior Ella, Ramon Szmuk +4 more·Nov 13, 2023
Reaching fault-tolerant quantum computation relies on the successful implementation of non-Clifford circuits with quantum error correction (QEC). In QEC, quantum gates and measurements encode quantum information into an error-protected Hilbert space,...
Multimode rotation-symmetric bosonic codes from homological rotor codes
Yijia Xu, Yixu Wang, Victor V. Albert·Nov 13, 2023
We develop quantum information processing primitives for the planar rotor, the state space of a particle on a circle. By interpreting rotor wavefunctions as periodically identified wavefunctions of a harmonic oscillator, we determine the group of bos...
Essential difference between 2D and 3D from the perspective of real-space renormalization group
Xinliang Lyu, Naoki Kawashima·Nov 10, 2023
We point out that area laws of quantum-information concepts indicate limitations of block transformations as well-behaved real-space renormalization group (RG) maps, which in turn guides the design of better RG schemes. Mutual-information area laws i...